Im working on a website and I need to figure out a way of making my life easier in the long term. I'm making a picture gallery and i will get about 200 pictures a month and i need to archive them and make it easy to post them online. I also want to be able to update the design withought messing anything up.

You can use a database where you have
+----------+--------------+--------------------------+
| title | some desc | url |
+----------+--------------+--------------------------+
| my Pic | this is bla... | 'images/mypic.gif' |
+----------+--------------+--------------------------+